How to post comment on blogger with an avatar

Is there an easy way to post a comment on a blogger website showing an avatar near the comment?
The blog is mine, I want to create some accounts to post comments.
Comments are enabled and working, but avatars are not showing.

I've tried registering using yahoo, wordpress, gravatar and openid - but nothing worked. I need a face alongside the comment.

Any suggestion?

I think you need to add a script and edit your blog's HTML. I'm currently building my blogger blog, and I'm also reading some posts on how to add an avatar if I post a comment on my own blog. I've also tried using gravatar, but I think it only works well with websites built in wordpress. Let me share with you what I'm currently reading http://www.mybloggertricks.com/2011/08/add-your-profile-pic-or-avatar-next-to.html

Thanks, but in meantime I've found that posting with a google account works too.

try changing your template. download some free wp templates.

I am looking for SEO on and off site fast progress.

The site is a Blogspot sales pitch for my offline on the ground personal tourism business.

Items for improvement:

Google SEPRS improvement

Blogspot comment posting

Youtube Video Promotions

Google Plus Optimization

Facebook Sales Page Promotion

If you can help on all or just specialize in one of these goals just email me or PM.